  <!-- para usar combobox -->

  <!--form name="form_os" method="post">
    <select name="singles">
      <option>Single1</option>
      <option>Single2</option>
    </select>
    <br><br>
    <input type="submit" name="bt_enviar" value="Enviar">
    <br>
  </form-->
  
 
  <!--br>
  <br>

  <table>
  <tr><td id="target"></td></tr>
  </table>
  <input type="button" value="agregar select" onClick="cargar()"/>


  <select id="multiple" multiple="multiple">
    <option selected="selected">Multiple1</option>
    <option>Multiple2</option>
    <option selected="selected">Multiple3</option>
  </select-->

<!--script>
//  function displayVals() {
//    var singleValues = $("#single").val();
//    var multipleValues = $("#multiple").val() || [];
//    $("p").html("<b>Single:</b> " +
//                singleValues +
//                " <b>Multiple:</b> " +
//                multipleValues.join(", "));
//  }
//  $("select").change(displayVals);
//  displayVals();
</script-->





<!-- Para contar checkbosx marcados -->

<!--form>
    <input type="checkbox" name="newsletter" checked="checked" value="Hourly" />

    <input type="checkbox" name="newsletter" value="Daily" />
    <input type="checkbox" name="newsletter" value="Weekly" />

    <input type="checkbox" name="newsletter" checked="checked" value="Monthly" />
    <input type="checkbox" name="newsletter" value="Yearly" />

  </form>
  <div></div>

<script>

    function countChecked() {
      var n = $("input:checked").length;
      $("div").text(n + (n <= 1 ? " is" : " are") + " checked!");
    }
    countChecked();
    $(":checkbox").click(countChecked);

</script-->



<!--Para la papiripoipi -->

<!--script language="JavaScript">
function mostrarSeleccionado()
{
  if (document.form1.estudios[0].checked)
    alert(document.form1.estudios[0].value );
  if (document.form1.estudios[1].checked)
    alert('tienes estudios primarios');
  if (document.form1.estudios[2].checked)
    alert('tienes estudios secundarios');
  if (document.form1.estudios[3].checked)
    alert('tienes estudios universitarios');
}
</script>


<form name="form1">
<input id="radio" type="radio" name="estudios" value="sin estudios">Sin
estudios
<br>
<input id="radio" type="radio" name="estudios">Primarios
<br>
<input id="radio" type="radio" name="estudios">Secundarios
<br>
<input id="radio" type="radio" name="estudios">Universitarios
<br>
<input id="radio" type="button" value="Mostrar" onClick="mostrarSeleccionado()">
</form-->

<script language="JavaScript">
function test()
{
    var arreglo = new Array();
    arreglo.push('contenido4');
    arreglo.push('contenido5');
    for(i=0; i<arreglo.length ;i++)
    {
        alert(arreglo[i]);
    }
    
}
</script>

<select id="id_select" style="display: none">
    <option id="id_opt">uno</option>
    <option id="id_opt">dos</option>
    <option id="id_opt">tres</option>
</select>
<br>
<input type="button" value="Test" onclick="test()">